I know that many of us here have experience with pcb designing.So if can please tell me if there is anything wrong with the schematic  and board of multiwii  i made with sensors mpu 6050,bmp 180, hmc 5883l and an atmega 328p-pu dip 28.Given below is the url.
https://github.com/ghoshatanu56/MULTIWII-SCHEMATIC.git
If anything is wrong or can be modified for better performance please tell me in this post.
Regards
Atanu ghosh

Well i forgot to mention that this design doesn't uses any module, rather it has the foot prints of sensors. Directly,. So if anyone is seeing this i will be happy to have a suggestion from them.HERE IS THE IMAGE OF THE SCHEMATIC

no extra i2c pullups ?
use a few more leds .. one for each sensor power , and two for the m328 serial lines

ok added i2c pull up resistors added and atmega 328pu tx rx led addded .anything else @saikat
https://github.com/ghoshatanu56/MULTIWII-SCHEMATIC.git